<div>The engine has been just about turnkey from the box. All I've ever had to do is adjust some settings so it would take propane instead of powermax. Throttle response from idle to full is around 6 seconds at 900 MSL and 75 degrees F. One thing that surprised me about this engine is how cool it runs on the ground. The fuse is just slightly warm to the touch and nowhere near the point of causing any sort of structural damage. I like the fact that it was affordable (compared to other comparable engines in the 18lb class) and worry free!</div>